<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script>
			var s="hello";
			s=s.concat("java");
			alert(s.big());
			var s2=String.fromCharCode(65,66,67,68,21016);
			alert(s2);
		</script>
	</head>
	<body>
	</body>
</html>
